b$.$ Which technical feature is most strongly related to the goal of protecting the safety and security of guests' possessions?

Defect rate $($random sample$)$

Room cycle time

Possible number of interruptions

Occupied interruptions

Honor bar discrepancy allowance rate

Number of guest room doors open at one time

Housekeeping productivity

c$.$ Why would room cycle time and defect rate be negatively correlated?

If workers hurry to clean the room faster, they are more likely to make mistakes or to forget process steps.

If workers hurry to clean the room faster, they are less likely to make mistakes or to forget process steps.

Fast workers are more productive than slow workers.

Slow workers make more mistakes than fast workers.